What is the nurse's priority action for a client experiencing an allergic reaction during thrombolytic therapy?

In situations where a client experiences an allergic reaction during thrombolytic therapy, the immediate priority is to ensure the safety and well-being of the client. Stopping the infusion allows for the reduction of the potentially harmful medication's effects and minimizes further exposure to the allergen.

Notifying the registered nurse is crucial because they may need to implement further interventions, assess the severity of the allergic reaction, and decide on additional treatments, such as administering medications to manage the allergic response. This action prioritizes patient safety and aligns with best practices in nursing care.

In this scenario, while other options such as administering oxygen or medications may seem appropriate, they do not address the immediate need to halt the infusion of the thrombolytic medication, which is critical in preventing further complications for the client.